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Finding the Fourth Proportional to 1,111.83, 1,666.12 and 625.02

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Solution

The fourth proportional to 1,111.83, 1,666.12 and 625.02 is: 936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111.83 : 1,666.12 = 625.02 : x
  2. Step 2: Convert to fraction form
    1,111.83/1,666.12 = 625.02/x
  3. Step 3: Cross multiply
    1,111.83x = 1,666.12 × 625.02
  4. Step 4: Simplify right side
    1,111.83x = 1,041,346.87
  5. Step 5: Solve for x
    x = 1,041,346.87/1,111.83
  6. Step 6: Final answer
    x = 936.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.