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Finding the Fourth Proportional to 370.47, 555.84 and 208.11

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Solution

The fourth proportional to 370.47, 555.84 and 208.11 is: 312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.47 : 555.84 = 208.11 : x
  2. Step 2: Convert to fraction form
    370.47/555.84 = 208.11/x
  3. Step 3: Cross multiply
    370.47x = 555.84 × 208.11
  4. Step 4: Simplify right side
    370.47x = 115,675.86
  5. Step 5: Solve for x
    x = 115,675.86/370.47
  6. Step 6: Final answer
    x = 312.24

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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.