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Finding the Fourth Proportional to 526.20, 785.44 and 488.17

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Solution

The fourth proportional to 526.20, 785.44 and 488.17 is: 728.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.20 : 785.44 = 488.17 : x
  2. Step 2: Convert to fraction form
    526.20/785.44 = 488.17/x
  3. Step 3: Cross multiply
    526.20x = 785.44 × 488.17
  4. Step 4: Simplify right side
    526.20x = 383,428.24
  5. Step 5: Solve for x
    x = 383,428.24/526.20
  6. Step 6: Final answer
    x = 728.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.