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Finding the Fourth Proportional to 369.10, 549.98 and 355.15

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Solution

The fourth proportional to 369.10, 549.98 and 355.15 is: 529.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.10 : 549.98 = 355.15 : x
  2. Step 2: Convert to fraction form
    369.10/549.98 = 355.15/x
  3. Step 3: Cross multiply
    369.10x = 549.98 × 355.15
  4. Step 4: Simplify right side
    369.10x = 195,325.40
  5. Step 5: Solve for x
    x = 195,325.40/369.10
  6. Step 6: Final answer
    x = 529.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.