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Finding the Fourth Proportional to 370.15, 555.42 and 313.04

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Solution

The fourth proportional to 370.15, 555.42 and 313.04 is: 469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.15 : 555.42 = 313.04 : x
  2. Step 2: Convert to fraction form
    370.15/555.42 = 313.04/x
  3. Step 3: Cross multiply
    370.15x = 555.42 × 313.04
  4. Step 4: Simplify right side
    370.15x = 173,868.68
  5. Step 5: Solve for x
    x = 173,868.68/370.15
  6. Step 6: Final answer
    x = 469.72

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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.