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Finding the Fourth Proportional to 345.28, 514.99 and 335

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Solution

The fourth proportional to 345.28, 514.99 and 335 is: 499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.28 : 514.99 = 335 : x
  2. Step 2: Convert to fraction form
    345.28/514.99 = 335/x
  3. Step 3: Cross multiply
    345.28x = 514.99 × 335
  4. Step 4: Simplify right side
    345.28x = 172,521.65
  5. Step 5: Solve for x
    x = 172,521.65/345.28
  6. Step 6: Final answer
    x = 499.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.