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Finding the Fourth Proportional to 657.34, 907.45 and 424.60

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Solution

The fourth proportional to 657.34, 907.45 and 424.60 is: 586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.34 : 907.45 = 424.60 : x
  2. Step 2: Convert to fraction form
    657.34/907.45 = 424.60/x
  3. Step 3: Cross multiply
    657.34x = 907.45 × 424.60
  4. Step 4: Simplify right side
    657.34x = 385,303.27
  5. Step 5: Solve for x
    x = 385,303.27/657.34
  6. Step 6: Final answer
    x = 586.16

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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.