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Finding the Fourth Proportional to 555.06, 765.99 and 368.58

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Solution

The fourth proportional to 555.06, 765.99 and 368.58 is: 508.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.06 : 765.99 = 368.58 : x
  2. Step 2: Convert to fraction form
    555.06/765.99 = 368.58/x
  3. Step 3: Cross multiply
    555.06x = 765.99 × 368.58
  4. Step 4: Simplify right side
    555.06x = 282,328.59
  5. Step 5: Solve for x
    x = 282,328.59/555.06
  6. Step 6: Final answer
    x = 508.65

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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.