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Finding the Fourth Proportional to 657.66, 907.50 and 377.90

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Solution

The fourth proportional to 657.66, 907.50 and 377.90 is: 521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.66 : 907.50 = 377.90 : x
  2. Step 2: Convert to fraction form
    657.66/907.50 = 377.90/x
  3. Step 3: Cross multiply
    657.66x = 907.50 × 377.90
  4. Step 4: Simplify right side
    657.66x = 342,939.71
  5. Step 5: Solve for x
    x = 342,939.71/657.66
  6. Step 6: Final answer
    x = 521.45

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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.