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Finding the Fourth Proportional to 555.17, 766.25 and 368.67

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Solution

The fourth proportional to 555.17, 766.25 and 368.67 is: 508.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.17 : 766.25 = 368.67 : x
  2. Step 2: Convert to fraction form
    555.17/766.25 = 368.67/x
  3. Step 3: Cross multiply
    555.17x = 766.25 × 368.67
  4. Step 4: Simplify right side
    555.17x = 282,493.39
  5. Step 5: Solve for x
    x = 282,493.39/555.17
  6. Step 6: Final answer
    x = 508.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.