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Finding the Fourth Proportional to 1,575.90, 2,363.51 and 480.05

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Solution

The fourth proportional to 1,575.90, 2,363.51 and 480.05 is: 719.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.90 : 2,363.51 = 480.05 : x
  2. Step 2: Convert to fraction form
    1,575.90/2,363.51 = 480.05/x
  3. Step 3: Cross multiply
    1,575.90x = 2,363.51 × 480.05
  4. Step 4: Simplify right side
    1,575.90x = 1,134,588.76
  5. Step 5: Solve for x
    x = 1,134,588.76/1,575.90
  6. Step 6: Final answer
    x = 719.96

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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.