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Finding the Fourth Proportional to 346.91, 521.10 and 210.02

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Solution

The fourth proportional to 346.91, 521.10 and 210.02 is: 315.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.91 : 521.10 = 210.02 : x
  2. Step 2: Convert to fraction form
    346.91/521.10 = 210.02/x
  3. Step 3: Cross multiply
    346.91x = 521.10 × 210.02
  4. Step 4: Simplify right side
    346.91x = 109,438.82
  5. Step 5: Solve for x
    x = 109,438.82/346.91
  6. Step 6: Final answer
    x = 315.47

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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.