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Finding the Fourth Proportional to 900.99, 1,352.30 and 607.77

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Solution

The fourth proportional to 900.99, 1,352.30 and 607.77 is: 912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.99 : 1,352.30 = 607.77 : x
  2. Step 2: Convert to fraction form
    900.99/1,352.30 = 607.77/x
  3. Step 3: Cross multiply
    900.99x = 1,352.30 × 607.77
  4. Step 4: Simplify right side
    900.99x = 821,884.33
  5. Step 5: Solve for x
    x = 821,884.33/900.99
  6. Step 6: Final answer
    x = 912.20

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Double scale
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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.