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Finding the Fourth Proportional to 900.23, 1,349.54 and 626.45

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Solution

The fourth proportional to 900.23, 1,349.54 and 626.45 is: 939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.23 : 1,349.54 = 626.45 : x
  2. Step 2: Convert to fraction form
    900.23/1,349.54 = 626.45/x
  3. Step 3: Cross multiply
    900.23x = 1,349.54 × 626.45
  4. Step 4: Simplify right side
    900.23x = 845,416.20
  5. Step 5: Solve for x
    x = 845,416.20/900.23
  6. Step 6: Final answer
    x = 939.11

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1.5x scale

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.