Home / 1,520.32-2,280.44-424.76

Finding the Fourth Proportional to 1,520.32, 2,280.44 and 424.76

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Solution

The fourth proportional to 1,520.32, 2,280.44 and 424.76 is: 637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.32 : 2,280.44 = 424.76 : x
  2. Step 2: Convert to fraction form
    1,520.32/2,280.44 = 424.76/x
  3. Step 3: Cross multiply
    1,520.32x = 2,280.44 × 424.76
  4. Step 4: Simplify right side
    1,520.32x = 968,639.69
  5. Step 5: Solve for x
    x = 968,639.69/1,520.32
  6. Step 6: Final answer
    x = 637.13

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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.