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Finding the Fourth Proportional to 582.38, 871.74 and 307.79

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Solution

The fourth proportional to 582.38, 871.74 and 307.79 is: 460.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.38 : 871.74 = 307.79 : x
  2. Step 2: Convert to fraction form
    582.38/871.74 = 307.79/x
  3. Step 3: Cross multiply
    582.38x = 871.74 × 307.79
  4. Step 4: Simplify right side
    582.38x = 268,312.85
  5. Step 5: Solve for x
    x = 268,312.85/582.38
  6. Step 6: Final answer
    x = 460.72

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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.