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Finding the Fourth Proportional to 551.24, 826.14 and 456.20

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Solution

The fourth proportional to 551.24, 826.14 and 456.20 is: 683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.24 : 826.14 = 456.20 : x
  2. Step 2: Convert to fraction form
    551.24/826.14 = 456.20/x
  3. Step 3: Cross multiply
    551.24x = 826.14 × 456.20
  4. Step 4: Simplify right side
    551.24x = 376,885.07
  5. Step 5: Solve for x
    x = 376,885.07/551.24
  6. Step 6: Final answer
    x = 683.70

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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.