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Finding the Fourth Proportional to 655.68, 904.95 and 626.52

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Solution

The fourth proportional to 655.68, 904.95 and 626.52 is: 864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.68 : 904.95 = 626.52 : x
  2. Step 2: Convert to fraction form
    655.68/904.95 = 626.52/x
  3. Step 3: Cross multiply
    655.68x = 904.95 × 626.52
  4. Step 4: Simplify right side
    655.68x = 566,969.27
  5. Step 5: Solve for x
    x = 566,969.27/655.68
  6. Step 6: Final answer
    x = 864.70

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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.