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Finding the Fourth Proportional to 345.03, 515.07 and 295.75

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Solution

The fourth proportional to 345.03, 515.07 and 295.75 is: 441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.03 : 515.07 = 295.75 : x
  2. Step 2: Convert to fraction form
    345.03/515.07 = 295.75/x
  3. Step 3: Cross multiply
    345.03x = 515.07 × 295.75
  4. Step 4: Simplify right side
    345.03x = 152,330.47
  5. Step 5: Solve for x
    x = 152,330.47/345.03
  6. Step 6: Final answer
    x = 441.50

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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.