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Finding the Fourth Proportional to 586.28, 880 and 312.32

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Solution

The fourth proportional to 586.28, 880 and 312.32 is: 468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.28 : 880 = 312.32 : x
  2. Step 2: Convert to fraction form
    586.28/880 = 312.32/x
  3. Step 3: Cross multiply
    586.28x = 880 × 312.32
  4. Step 4: Simplify right side
    586.28x = 274,841.60
  5. Step 5: Solve for x
    x = 274,841.60/586.28
  6. Step 6: Final answer
    x = 468.79

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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.