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Finding the Fourth Proportional to 555.42, 833.31 and 208.92

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Solution

The fourth proportional to 555.42, 833.31 and 208.92 is: 313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.42 : 833.31 = 208.92 : x
  2. Step 2: Convert to fraction form
    555.42/833.31 = 208.92/x
  3. Step 3: Cross multiply
    555.42x = 833.31 × 208.92
  4. Step 4: Simplify right side
    555.42x = 174,095.13
  5. Step 5: Solve for x
    x = 174,095.13/555.42
  6. Step 6: Final answer
    x = 313.45

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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.