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Finding the Fourth Proportional to 900.03, 1,242.20 and 526.99

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Solution

The fourth proportional to 900.03, 1,242.20 and 526.99 is: 727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.03 : 1,242.20 = 526.99 : x
  2. Step 2: Convert to fraction form
    900.03/1,242.20 = 526.99/x
  3. Step 3: Cross multiply
    900.03x = 1,242.20 × 526.99
  4. Step 4: Simplify right side
    900.03x = 654,625.19
  5. Step 5: Solve for x
    x = 654,625.19/900.03
  6. Step 6: Final answer
    x = 727.34

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1.5x scale

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.