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Finding the Fourth Proportional to 924.30, 1,395.90 and 924.30

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Solution

The fourth proportional to 924.30, 1,395.90 and 924.30 is: 1,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.30 : 1,395.90 = 924.30 : x
  2. Step 2: Convert to fraction form
    924.30/1,395.90 = 924.30/x
  3. Step 3: Cross multiply
    924.30x = 1,395.90 × 924.30
  4. Step 4: Simplify right side
    924.30x = 1,290,230.37
  5. Step 5: Solve for x
    x = 1,290,230.37/924.30
  6. Step 6: Final answer
    x = 1,395.90

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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.