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Finding the Fourth Proportional to 594.79, 891.10 and 439

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Solution

The fourth proportional to 594.79, 891.10 and 439 is: 657.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.79 : 891.10 = 439 : x
  2. Step 2: Convert to fraction form
    594.79/891.10 = 439/x
  3. Step 3: Cross multiply
    594.79x = 891.10 × 439
  4. Step 4: Simplify right side
    594.79x = 391,192.90
  5. Step 5: Solve for x
    x = 391,192.90/594.79
  6. Step 6: Final answer
    x = 657.70

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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.