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Finding the Fourth Proportional to 343.29, 473.40 and 313.32

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Solution

The fourth proportional to 343.29, 473.40 and 313.32 is: 432.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.29 : 473.40 = 313.32 : x
  2. Step 2: Convert to fraction form
    343.29/473.40 = 313.32/x
  3. Step 3: Cross multiply
    343.29x = 473.40 × 313.32
  4. Step 4: Simplify right side
    343.29x = 148,325.69
  5. Step 5: Solve for x
    x = 148,325.69/343.29
  6. Step 6: Final answer
    x = 432.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.