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Finding the Fourth Proportional to 1,088.28, 1,501.86 and 622.68

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Solution

The fourth proportional to 1,088.28, 1,501.86 and 622.68 is: 859.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.28 : 1,501.86 = 622.68 : x
  2. Step 2: Convert to fraction form
    1,088.28/1,501.86 = 622.68/x
  3. Step 3: Cross multiply
    1,088.28x = 1,501.86 × 622.68
  4. Step 4: Simplify right side
    1,088.28x = 935,178.18
  5. Step 5: Solve for x
    x = 935,178.18/1,088.28
  6. Step 6: Final answer
    x = 859.32

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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.