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Finding the Fourth Proportional to 555.48, 834.03 and 312.48

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Solution

The fourth proportional to 555.48, 834.03 and 312.48 is: 469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.48 : 834.03 = 312.48 : x
  2. Step 2: Convert to fraction form
    555.48/834.03 = 312.48/x
  3. Step 3: Cross multiply
    555.48x = 834.03 × 312.48
  4. Step 4: Simplify right side
    555.48x = 260,617.69
  5. Step 5: Solve for x
    x = 260,617.69/555.48
  6. Step 6: Final answer
    x = 469.18

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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.