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Finding the Fourth Proportional to 693.60, 956.55 and 472.47

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Solution

The fourth proportional to 693.60, 956.55 and 472.47 is: 651.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.60 : 956.55 = 472.47 : x
  2. Step 2: Convert to fraction form
    693.60/956.55 = 472.47/x
  3. Step 3: Cross multiply
    693.60x = 956.55 × 472.47
  4. Step 4: Simplify right side
    693.60x = 451,941.18
  5. Step 5: Solve for x
    x = 451,941.18/693.60
  6. Step 6: Final answer
    x = 651.59

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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.