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Finding the Fourth Proportional to 1,094.80, 1,642.60 and 517.24

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Solution

The fourth proportional to 1,094.80, 1,642.60 and 517.24 is: 776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.80 : 1,642.60 = 517.24 : x
  2. Step 2: Convert to fraction form
    1,094.80/1,642.60 = 517.24/x
  3. Step 3: Cross multiply
    1,094.80x = 1,642.60 × 517.24
  4. Step 4: Simplify right side
    1,094.80x = 849,618.42
  5. Step 5: Solve for x
    x = 849,618.42/1,094.80
  6. Step 6: Final answer
    x = 776.05

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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.