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Finding the Fourth Proportional to 657.65, 907.54 and 395.66

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Solution

The fourth proportional to 657.65, 907.54 and 395.66 is: 546.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.65 : 907.54 = 395.66 : x
  2. Step 2: Convert to fraction form
    657.65/907.54 = 395.66/x
  3. Step 3: Cross multiply
    657.65x = 907.54 × 395.66
  4. Step 4: Simplify right side
    657.65x = 359,078.56
  5. Step 5: Solve for x
    x = 359,078.56/657.65
  6. Step 6: Final answer
    x = 546.00

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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.