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Finding the Fourth Proportional to 295, 442.50 and 291.40

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Solution

The fourth proportional to 295, 442.50 and 291.40 is: 437.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    295 : 442.50 = 291.40 : x
  2. Step 2: Convert to fraction form
    295/442.50 = 291.40/x
  3. Step 3: Cross multiply
    295x = 442.50 × 291.40
  4. Step 4: Simplify right side
    295x = 128,944.50
  5. Step 5: Solve for x
    x = 128,944.50/295
  6. Step 6: Final answer
    x = 437.10

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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.