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Finding the Fourth Proportional to 900.03, 1,353.08 and 719.40

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Solution

The fourth proportional to 900.03, 1,353.08 and 719.40 is: 1,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.03 : 1,353.08 = 719.40 : x
  2. Step 2: Convert to fraction form
    900.03/1,353.08 = 719.40/x
  3. Step 3: Cross multiply
    900.03x = 1,353.08 × 719.40
  4. Step 4: Simplify right side
    900.03x = 973,405.75
  5. Step 5: Solve for x
    x = 973,405.75/900.03
  6. Step 6: Final answer
    x = 1,081.53

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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.