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Finding the Fourth Proportional to 945.35, 1,304.58 and 525.69

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Solution

The fourth proportional to 945.35, 1,304.58 and 525.69 is: 725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.35 : 1,304.58 = 525.69 : x
  2. Step 2: Convert to fraction form
    945.35/1,304.58 = 525.69/x
  3. Step 3: Cross multiply
    945.35x = 1,304.58 × 525.69
  4. Step 4: Simplify right side
    945.35x = 685,806.63
  5. Step 5: Solve for x
    x = 685,806.63/945.35
  6. Step 6: Final answer
    x = 725.45

Related Problems

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Half scale
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Double scale
Find fourth proportional to 946.35, 1,305.96 and 526.69
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.