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Finding the Fourth Proportional to 1,148.08, 1,722.12 and 417.36

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Solution

The fourth proportional to 1,148.08, 1,722.12 and 417.36 is: 626.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.08 : 1,722.12 = 417.36 : x
  2. Step 2: Convert to fraction form
    1,148.08/1,722.12 = 417.36/x
  3. Step 3: Cross multiply
    1,148.08x = 1,722.12 × 417.36
  4. Step 4: Simplify right side
    1,148.08x = 718,744.00
  5. Step 5: Solve for x
    x = 718,744.00/1,148.08
  6. Step 6: Final answer
    x = 626.04

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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.