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Finding the Fourth Proportional to 586.95, 880.80 and 279.15

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Solution

The fourth proportional to 586.95, 880.80 and 279.15 is: 418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.95 : 880.80 = 279.15 : x
  2. Step 2: Convert to fraction form
    586.95/880.80 = 279.15/x
  3. Step 3: Cross multiply
    586.95x = 880.80 × 279.15
  4. Step 4: Simplify right side
    586.95x = 245,871.76
  5. Step 5: Solve for x
    x = 245,871.76/586.95
  6. Step 6: Final answer
    x = 418.90

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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.