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Finding the Fourth Proportional to 945.33, 1,417.74 and 425.04

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Solution

The fourth proportional to 945.33, 1,417.74 and 425.04 is: 637.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.33 : 1,417.74 = 425.04 : x
  2. Step 2: Convert to fraction form
    945.33/1,417.74 = 425.04/x
  3. Step 3: Cross multiply
    945.33x = 1,417.74 × 425.04
  4. Step 4: Simplify right side
    945.33x = 602,596.21
  5. Step 5: Solve for x
    x = 602,596.21/945.33
  6. Step 6: Final answer
    x = 637.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.