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Finding the Fourth Proportional to 1,566.16, 2,347.72 and 872.19

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Solution

The fourth proportional to 1,566.16, 2,347.72 and 872.19 is: 1,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.16 : 2,347.72 = 872.19 : x
  2. Step 2: Convert to fraction form
    1,566.16/2,347.72 = 872.19/x
  3. Step 3: Cross multiply
    1,566.16x = 2,347.72 × 872.19
  4. Step 4: Simplify right side
    1,566.16x = 2,047,655.73
  5. Step 5: Solve for x
    x = 2,047,655.73/1,566.16
  6. Step 6: Final answer
    x = 1,307.44

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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.