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Finding the Fourth Proportional to 552.68, 760.95 and 469.65

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Solution

The fourth proportional to 552.68, 760.95 and 469.65 is: 646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.68 : 760.95 = 469.65 : x
  2. Step 2: Convert to fraction form
    552.68/760.95 = 469.65/x
  3. Step 3: Cross multiply
    552.68x = 760.95 × 469.65
  4. Step 4: Simplify right side
    552.68x = 357,380.17
  5. Step 5: Solve for x
    x = 357,380.17/552.68
  6. Step 6: Final answer
    x = 646.64

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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.