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Finding the Fourth Proportional to 1,559.70, 2,339.14 and 463.80

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Solution

The fourth proportional to 1,559.70, 2,339.14 and 463.80 is: 695.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.70 : 2,339.14 = 463.80 : x
  2. Step 2: Convert to fraction form
    1,559.70/2,339.14 = 463.80/x
  3. Step 3: Cross multiply
    1,559.70x = 2,339.14 × 463.80
  4. Step 4: Simplify right side
    1,559.70x = 1,084,893.13
  5. Step 5: Solve for x
    x = 1,084,893.13/1,559.70
  6. Step 6: Final answer
    x = 695.58

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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.