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Finding the Fourth Proportional to 900.23, 1,241.93 and 650.99

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Solution

The fourth proportional to 900.23, 1,241.93 and 650.99 is: 898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.23 : 1,241.93 = 650.99 : x
  2. Step 2: Convert to fraction form
    900.23/1,241.93 = 650.99/x
  3. Step 3: Cross multiply
    900.23x = 1,241.93 × 650.99
  4. Step 4: Simplify right side
    900.23x = 808,488.74
  5. Step 5: Solve for x
    x = 808,488.74/900.23
  6. Step 6: Final answer
    x = 898.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.