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Finding the Fourth Proportional to 1,563.91, 2,345.18 and 468.36

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Solution

The fourth proportional to 1,563.91, 2,345.18 and 468.36 is: 702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.91 : 2,345.18 = 468.36 : x
  2. Step 2: Convert to fraction form
    1,563.91/2,345.18 = 468.36/x
  3. Step 3: Cross multiply
    1,563.91x = 2,345.18 × 468.36
  4. Step 4: Simplify right side
    1,563.91x = 1,098,386.16
  5. Step 5: Solve for x
    x = 1,098,386.16/1,563.91
  6. Step 6: Final answer
    x = 702.33

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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.