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Finding the Fourth Proportional to 814.88, 1,124.58 and 483.08

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Solution

The fourth proportional to 814.88, 1,124.58 and 483.08 is: 666.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    814.88 : 1,124.58 = 483.08 : x
  2. Step 2: Convert to fraction form
    814.88/1,124.58 = 483.08/x
  3. Step 3: Cross multiply
    814.88x = 1,124.58 × 483.08
  4. Step 4: Simplify right side
    814.88x = 543,262.11
  5. Step 5: Solve for x
    x = 543,262.11/814.88
  6. Step 6: Final answer
    x = 666.68

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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.