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Finding the Fourth Proportional to 526.85, 790.40 and 266.75

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Solution

The fourth proportional to 526.85, 790.40 and 266.75 is: 400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.85 : 790.40 = 266.75 : x
  2. Step 2: Convert to fraction form
    526.85/790.40 = 266.75/x
  3. Step 3: Cross multiply
    526.85x = 790.40 × 266.75
  4. Step 4: Simplify right side
    526.85x = 210,835.91
  5. Step 5: Solve for x
    x = 210,835.91/526.85
  6. Step 6: Final answer
    x = 400.19

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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.