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Finding the Fourth Proportional to 555.02, 766.21 and 368.41

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Solution

The fourth proportional to 555.02, 766.21 and 368.41 is: 508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.02 : 766.21 = 368.41 : x
  2. Step 2: Convert to fraction form
    555.02/766.21 = 368.41/x
  3. Step 3: Cross multiply
    555.02x = 766.21 × 368.41
  4. Step 4: Simplify right side
    555.02x = 282,279.50
  5. Step 5: Solve for x
    x = 282,279.50/555.02
  6. Step 6: Final answer
    x = 508.60

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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.