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Finding the Fourth Proportional to 354.14, 530.39 and 348.20

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Solution

The fourth proportional to 354.14, 530.39 and 348.20 is: 521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.14 : 530.39 = 348.20 : x
  2. Step 2: Convert to fraction form
    354.14/530.39 = 348.20/x
  3. Step 3: Cross multiply
    354.14x = 530.39 × 348.20
  4. Step 4: Simplify right side
    354.14x = 184,680.02
  5. Step 5: Solve for x
    x = 184,680.02/354.14
  6. Step 6: Final answer
    x = 521.50

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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.