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Finding the Fourth Proportional to 658.77, 907.82 and 615.95

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Solution

The fourth proportional to 658.77, 907.82 and 615.95 is: 848.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.77 : 907.82 = 615.95 : x
  2. Step 2: Convert to fraction form
    658.77/907.82 = 615.95/x
  3. Step 3: Cross multiply
    658.77x = 907.82 × 615.95
  4. Step 4: Simplify right side
    658.77x = 559,164.11
  5. Step 5: Solve for x
    x = 559,164.11/658.77
  6. Step 6: Final answer
    x = 848.80

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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.