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Finding the Fourth Proportional to 1,071.83, 1,479.22 and 652.08

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Solution

The fourth proportional to 1,071.83, 1,479.22 and 652.08 is: 899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.83 : 1,479.22 = 652.08 : x
  2. Step 2: Convert to fraction form
    1,071.83/1,479.22 = 652.08/x
  3. Step 3: Cross multiply
    1,071.83x = 1,479.22 × 652.08
  4. Step 4: Simplify right side
    1,071.83x = 964,569.78
  5. Step 5: Solve for x
    x = 964,569.78/1,071.83
  6. Step 6: Final answer
    x = 899.93

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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.