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Finding the Fourth Proportional to 658.02, 909.28 and 625.99

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Solution

The fourth proportional to 658.02, 909.28 and 625.99 is: 865.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.02 : 909.28 = 625.99 : x
  2. Step 2: Convert to fraction form
    658.02/909.28 = 625.99/x
  3. Step 3: Cross multiply
    658.02x = 909.28 × 625.99
  4. Step 4: Simplify right side
    658.02x = 569,198.16
  5. Step 5: Solve for x
    x = 569,198.16/658.02
  6. Step 6: Final answer
    x = 865.01

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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.