Home / 1,088.18-1,631.45-510.38

Finding the Fourth Proportional to 1,088.18, 1,631.45 and 510.38

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Solution

The fourth proportional to 1,088.18, 1,631.45 and 510.38 is: 765.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.18 : 1,631.45 = 510.38 : x
  2. Step 2: Convert to fraction form
    1,088.18/1,631.45 = 510.38/x
  3. Step 3: Cross multiply
    1,088.18x = 1,631.45 × 510.38
  4. Step 4: Simplify right side
    1,088.18x = 832,652.57
  5. Step 5: Solve for x
    x = 832,652.57/1,088.18
  6. Step 6: Final answer
    x = 765.18

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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.