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Finding the Fourth Proportional to 873.02, 1,309.51 and 295.90

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Solution

The fourth proportional to 873.02, 1,309.51 and 295.90 is: 443.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.02 : 1,309.51 = 295.90 : x
  2. Step 2: Convert to fraction form
    873.02/1,309.51 = 295.90/x
  3. Step 3: Cross multiply
    873.02x = 1,309.51 × 295.90
  4. Step 4: Simplify right side
    873.02x = 387,484.01
  5. Step 5: Solve for x
    x = 387,484.01/873.02
  6. Step 6: Final answer
    x = 443.84

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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.