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Finding the Fourth Proportional to 992.73, 1,489.45 and 603.52

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Solution

The fourth proportional to 992.73, 1,489.45 and 603.52 is: 905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.73 : 1,489.45 = 603.52 : x
  2. Step 2: Convert to fraction form
    992.73/1,489.45 = 603.52/x
  3. Step 3: Cross multiply
    992.73x = 1,489.45 × 603.52
  4. Step 4: Simplify right side
    992.73x = 898,909.85
  5. Step 5: Solve for x
    x = 898,909.85/992.73
  6. Step 6: Final answer
    x = 905.50

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Double scale
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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.