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Finding the Fourth Proportional to 945.58, 1,417.25 and 424.97

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Solution

The fourth proportional to 945.58, 1,417.25 and 424.97 is: 636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.58 : 1,417.25 = 424.97 : x
  2. Step 2: Convert to fraction form
    945.58/1,417.25 = 424.97/x
  3. Step 3: Cross multiply
    945.58x = 1,417.25 × 424.97
  4. Step 4: Simplify right side
    945.58x = 602,286.33
  5. Step 5: Solve for x
    x = 602,286.33/945.58
  6. Step 6: Final answer
    x = 636.95

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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.