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Finding the Fourth Proportional to 346.30, 521.35 and 316.06

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Solution

The fourth proportional to 346.30, 521.35 and 316.06 is: 475.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.30 : 521.35 = 316.06 : x
  2. Step 2: Convert to fraction form
    346.30/521.35 = 316.06/x
  3. Step 3: Cross multiply
    346.30x = 521.35 × 316.06
  4. Step 4: Simplify right side
    346.30x = 164,777.88
  5. Step 5: Solve for x
    x = 164,777.88/346.30
  6. Step 6: Final answer
    x = 475.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.