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Finding the Fourth Proportional to 1,088.14, 1,501.23 and 715.32

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Solution

The fourth proportional to 1,088.14, 1,501.23 and 715.32 is: 986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.14 : 1,501.23 = 715.32 : x
  2. Step 2: Convert to fraction form
    1,088.14/1,501.23 = 715.32/x
  3. Step 3: Cross multiply
    1,088.14x = 1,501.23 × 715.32
  4. Step 4: Simplify right side
    1,088.14x = 1,073,859.84
  5. Step 5: Solve for x
    x = 1,073,859.84/1,088.14
  6. Step 6: Final answer
    x = 986.88

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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.