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Finding the Fourth Proportional to 795.61, 1,193.10 and 487

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Solution

The fourth proportional to 795.61, 1,193.10 and 487 is: 730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.61 : 1,193.10 = 487 : x
  2. Step 2: Convert to fraction form
    795.61/1,193.10 = 487/x
  3. Step 3: Cross multiply
    795.61x = 1,193.10 × 487
  4. Step 4: Simplify right side
    795.61x = 581,039.70
  5. Step 5: Solve for x
    x = 581,039.70/795.61
  6. Step 6: Final answer
    x = 730.31

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1.5x scale

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.