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Finding the Fourth Proportional to 1,068.24, 1,473.96 and 626.28

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Solution

The fourth proportional to 1,068.24, 1,473.96 and 626.28 is: 864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.24 : 1,473.96 = 626.28 : x
  2. Step 2: Convert to fraction form
    1,068.24/1,473.96 = 626.28/x
  3. Step 3: Cross multiply
    1,068.24x = 1,473.96 × 626.28
  4. Step 4: Simplify right side
    1,068.24x = 923,111.67
  5. Step 5: Solve for x
    x = 923,111.67/1,068.24
  6. Step 6: Final answer
    x = 864.14

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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.