Home / 1,044.16-1,440.96-630.40

Finding the Fourth Proportional to 1,044.16, 1,440.96 and 630.40

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Solution

The fourth proportional to 1,044.16, 1,440.96 and 630.40 is: 869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.16 : 1,440.96 = 630.40 : x
  2. Step 2: Convert to fraction form
    1,044.16/1,440.96 = 630.40/x
  3. Step 3: Cross multiply
    1,044.16x = 1,440.96 × 630.40
  4. Step 4: Simplify right side
    1,044.16x = 908,381.18
  5. Step 5: Solve for x
    x = 908,381.18/1,044.16
  6. Step 6: Final answer
    x = 869.96

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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.