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Finding the Fourth Proportional to 1,052.98, 1,579.46 and 688.07

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Solution

The fourth proportional to 1,052.98, 1,579.46 and 688.07 is: 1,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.98 : 1,579.46 = 688.07 : x
  2. Step 2: Convert to fraction form
    1,052.98/1,579.46 = 688.07/x
  3. Step 3: Cross multiply
    1,052.98x = 1,579.46 × 688.07
  4. Step 4: Simplify right side
    1,052.98x = 1,086,779.04
  5. Step 5: Solve for x
    x = 1,086,779.04/1,052.98
  6. Step 6: Final answer
    x = 1,032.10

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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.