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Finding the Fourth Proportional to 552.42, 761.76 and 473.99

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Solution

The fourth proportional to 552.42, 761.76 and 473.99 is: 653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.42 : 761.76 = 473.99 : x
  2. Step 2: Convert to fraction form
    552.42/761.76 = 473.99/x
  3. Step 3: Cross multiply
    552.42x = 761.76 × 473.99
  4. Step 4: Simplify right side
    552.42x = 361,062.81
  5. Step 5: Solve for x
    x = 361,062.81/552.42
  6. Step 6: Final answer
    x = 653.60

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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.