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Finding the Fourth Proportional to 900.30, 1,263.30 and 900.30

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Solution

The fourth proportional to 900.30, 1,263.30 and 900.30 is: 1,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.30 : 1,263.30 = 900.30 : x
  2. Step 2: Convert to fraction form
    900.30/1,263.30 = 900.30/x
  3. Step 3: Cross multiply
    900.30x = 1,263.30 × 900.30
  4. Step 4: Simplify right side
    900.30x = 1,137,348.99
  5. Step 5: Solve for x
    x = 1,137,348.99/900.30
  6. Step 6: Final answer
    x = 1,263.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.