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Finding the Fourth Proportional to 1,088.10, 1,501.47 and 622.35

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Solution

The fourth proportional to 1,088.10, 1,501.47 and 622.35 is: 858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.10 : 1,501.47 = 622.35 : x
  2. Step 2: Convert to fraction form
    1,088.10/1,501.47 = 622.35/x
  3. Step 3: Cross multiply
    1,088.10x = 1,501.47 × 622.35
  4. Step 4: Simplify right side
    1,088.10x = 934,439.85
  5. Step 5: Solve for x
    x = 934,439.85/1,088.10
  6. Step 6: Final answer
    x = 858.78

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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.