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Finding the Fourth Proportional to 491.85, 732.53 and 486.18

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Solution

The fourth proportional to 491.85, 732.53 and 486.18 is: 724.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.85 : 732.53 = 486.18 : x
  2. Step 2: Convert to fraction form
    491.85/732.53 = 486.18/x
  3. Step 3: Cross multiply
    491.85x = 732.53 × 486.18
  4. Step 4: Simplify right side
    491.85x = 356,139.00
  5. Step 5: Solve for x
    x = 356,139.00/491.85
  6. Step 6: Final answer
    x = 724.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.