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Finding the Fourth Proportional to 529.62, 793.59 and 312.66

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Solution

The fourth proportional to 529.62, 793.59 and 312.66 is: 468.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.62 : 793.59 = 312.66 : x
  2. Step 2: Convert to fraction form
    529.62/793.59 = 312.66/x
  3. Step 3: Cross multiply
    529.62x = 793.59 × 312.66
  4. Step 4: Simplify right side
    529.62x = 248,123.85
  5. Step 5: Solve for x
    x = 248,123.85/529.62
  6. Step 6: Final answer
    x = 468.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.