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Finding the Fourth Proportional to 904.62, 1,359.45 and 899.10

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Solution

The fourth proportional to 904.62, 1,359.45 and 899.10 is: 1,351.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.62 : 1,359.45 = 899.10 : x
  2. Step 2: Convert to fraction form
    904.62/1,359.45 = 899.10/x
  3. Step 3: Cross multiply
    904.62x = 1,359.45 × 899.10
  4. Step 4: Simplify right side
    904.62x = 1,222,281.50
  5. Step 5: Solve for x
    x = 1,222,281.50/904.62
  6. Step 6: Final answer
    x = 1,351.15

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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.