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Finding the Fourth Proportional to 789.26, 1,088.88 and 457.52

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Solution

The fourth proportional to 789.26, 1,088.88 and 457.52 is: 631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.26 : 1,088.88 = 457.52 : x
  2. Step 2: Convert to fraction form
    789.26/1,088.88 = 457.52/x
  3. Step 3: Cross multiply
    789.26x = 1,088.88 × 457.52
  4. Step 4: Simplify right side
    789.26x = 498,184.38
  5. Step 5: Solve for x
    x = 498,184.38/789.26
  6. Step 6: Final answer
    x = 631.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.