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Finding the Fourth Proportional to 824.68, 1,235.95 and 617.62

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Solution

The fourth proportional to 824.68, 1,235.95 and 617.62 is: 925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.68 : 1,235.95 = 617.62 : x
  2. Step 2: Convert to fraction form
    824.68/1,235.95 = 617.62/x
  3. Step 3: Cross multiply
    824.68x = 1,235.95 × 617.62
  4. Step 4: Simplify right side
    824.68x = 763,342.81
  5. Step 5: Solve for x
    x = 763,342.81/824.68
  6. Step 6: Final answer
    x = 925.63

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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.