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Finding the Fourth Proportional to 1,088.64, 1,498.70 and 1,015.13

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Solution

The fourth proportional to 1,088.64, 1,498.70 and 1,015.13 is: 1,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.64 : 1,498.70 = 1,015.13 : x
  2. Step 2: Convert to fraction form
    1,088.64/1,498.70 = 1,015.13/x
  3. Step 3: Cross multiply
    1,088.64x = 1,498.70 × 1,015.13
  4. Step 4: Simplify right side
    1,088.64x = 1,521,381.62
  5. Step 5: Solve for x
    x = 1,521,381.62/1,088.64
  6. Step 6: Final answer
    x = 1,397.51

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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.