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Finding the Fourth Proportional to 346.01, 518.40 and 291.51

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Solution

The fourth proportional to 346.01, 518.40 and 291.51 is: 436.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.01 : 518.40 = 291.51 : x
  2. Step 2: Convert to fraction form
    346.01/518.40 = 291.51/x
  3. Step 3: Cross multiply
    346.01x = 518.40 × 291.51
  4. Step 4: Simplify right side
    346.01x = 151,118.78
  5. Step 5: Solve for x
    x = 151,118.78/346.01
  6. Step 6: Final answer
    x = 436.75

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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.