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Finding the Fourth Proportional to 945.75, 1,305.09 and 526.02

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Solution

The fourth proportional to 945.75, 1,305.09 and 526.02 is: 725.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.75 : 1,305.09 = 526.02 : x
  2. Step 2: Convert to fraction form
    945.75/1,305.09 = 526.02/x
  3. Step 3: Cross multiply
    945.75x = 1,305.09 × 526.02
  4. Step 4: Simplify right side
    945.75x = 686,506.24
  5. Step 5: Solve for x
    x = 686,506.24/945.75
  6. Step 6: Final answer
    x = 725.88

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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.