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Finding the Fourth Proportional to 370.10, 551.47 and 356.15

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Solution

The fourth proportional to 370.10, 551.47 and 356.15 is: 530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.10 : 551.47 = 356.15 : x
  2. Step 2: Convert to fraction form
    370.10/551.47 = 356.15/x
  3. Step 3: Cross multiply
    370.10x = 551.47 × 356.15
  4. Step 4: Simplify right side
    370.10x = 196,406.04
  5. Step 5: Solve for x
    x = 196,406.04/370.10
  6. Step 6: Final answer
    x = 530.68

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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.