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Finding the Fourth Proportional to 345.84, 521.40 and 341.16

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Solution

The fourth proportional to 345.84, 521.40 and 341.16 is: 514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.84 : 521.40 = 341.16 : x
  2. Step 2: Convert to fraction form
    345.84/521.40 = 341.16/x
  3. Step 3: Cross multiply
    345.84x = 521.40 × 341.16
  4. Step 4: Simplify right side
    345.84x = 177,880.82
  5. Step 5: Solve for x
    x = 177,880.82/345.84
  6. Step 6: Final answer
    x = 514.34

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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.