Home / 1,490.08-2,235.20-517.44

Finding the Fourth Proportional to 1,490.08, 2,235.20 and 517.44

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Solution

The fourth proportional to 1,490.08, 2,235.20 and 517.44 is: 776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.08 : 2,235.20 = 517.44 : x
  2. Step 2: Convert to fraction form
    1,490.08/2,235.20 = 517.44/x
  3. Step 3: Cross multiply
    1,490.08x = 2,235.20 × 517.44
  4. Step 4: Simplify right side
    1,490.08x = 1,156,581.89
  5. Step 5: Solve for x
    x = 1,156,581.89/1,490.08
  6. Step 6: Final answer
    x = 776.19

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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.