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Finding the Fourth Proportional to 555.58, 833.32 and 208.75

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Solution

The fourth proportional to 555.58, 833.32 and 208.75 is: 313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.58 : 833.32 = 208.75 : x
  2. Step 2: Convert to fraction form
    555.58/833.32 = 208.75/x
  3. Step 3: Cross multiply
    555.58x = 833.32 × 208.75
  4. Step 4: Simplify right side
    555.58x = 173,955.55
  5. Step 5: Solve for x
    x = 173,955.55/555.58
  6. Step 6: Final answer
    x = 313.11

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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.