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Finding the Fourth Proportional to 657.40, 907.19 and 362.66

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Solution

The fourth proportional to 657.40, 907.19 and 362.66 is: 500.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.40 : 907.19 = 362.66 : x
  2. Step 2: Convert to fraction form
    657.40/907.19 = 362.66/x
  3. Step 3: Cross multiply
    657.40x = 907.19 × 362.66
  4. Step 4: Simplify right side
    657.40x = 329,001.53
  5. Step 5: Solve for x
    x = 329,001.53/657.40
  6. Step 6: Final answer
    x = 500.46

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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.