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Finding the Fourth Proportional to 683.30, 1,019.99 and 632.54

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Solution

The fourth proportional to 683.30, 1,019.99 and 632.54 is: 944.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.30 : 1,019.99 = 632.54 : x
  2. Step 2: Convert to fraction form
    683.30/1,019.99 = 632.54/x
  3. Step 3: Cross multiply
    683.30x = 1,019.99 × 632.54
  4. Step 4: Simplify right side
    683.30x = 645,188.61
  5. Step 5: Solve for x
    x = 645,188.61/683.30
  6. Step 6: Final answer
    x = 944.22

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Double scale
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1.5x scale

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.