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Finding the Fourth Proportional to 630.13, 939.98 and 537.79

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Solution

The fourth proportional to 630.13, 939.98 and 537.79 is: 802.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.13 : 939.98 = 537.79 : x
  2. Step 2: Convert to fraction form
    630.13/939.98 = 537.79/x
  3. Step 3: Cross multiply
    630.13x = 939.98 × 537.79
  4. Step 4: Simplify right side
    630.13x = 505,511.84
  5. Step 5: Solve for x
    x = 505,511.84/630.13
  6. Step 6: Final answer
    x = 802.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.