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Finding the Fourth Proportional to 356.14, 530.60 and 354.70

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Solution

The fourth proportional to 356.14, 530.60 and 354.70 is: 528.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.14 : 530.60 = 354.70 : x
  2. Step 2: Convert to fraction form
    356.14/530.60 = 354.70/x
  3. Step 3: Cross multiply
    356.14x = 530.60 × 354.70
  4. Step 4: Simplify right side
    356.14x = 188,203.82
  5. Step 5: Solve for x
    x = 188,203.82/356.14
  6. Step 6: Final answer
    x = 528.45

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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.