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Finding the Fourth Proportional to 1,563.76, 2,345.15 and 467.78

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Solution

The fourth proportional to 1,563.76, 2,345.15 and 467.78 is: 701.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.76 : 2,345.15 = 467.78 : x
  2. Step 2: Convert to fraction form
    1,563.76/2,345.15 = 467.78/x
  3. Step 3: Cross multiply
    1,563.76x = 2,345.15 × 467.78
  4. Step 4: Simplify right side
    1,563.76x = 1,097,003.71
  5. Step 5: Solve for x
    x = 1,097,003.71/1,563.76
  6. Step 6: Final answer
    x = 701.52

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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.