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Finding the Fourth Proportional to 387.02, 579.29 and 366.98

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Solution

The fourth proportional to 387.02, 579.29 and 366.98 is: 549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.02 : 579.29 = 366.98 : x
  2. Step 2: Convert to fraction form
    387.02/579.29 = 366.98/x
  3. Step 3: Cross multiply
    387.02x = 579.29 × 366.98
  4. Step 4: Simplify right side
    387.02x = 212,583.11
  5. Step 5: Solve for x
    x = 212,583.11/387.02
  6. Step 6: Final answer
    x = 549.28

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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.