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Finding the Fourth Proportional to 570.08, 856.20 and 488

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Solution

The fourth proportional to 570.08, 856.20 and 488 is: 732.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.08 : 856.20 = 488 : x
  2. Step 2: Convert to fraction form
    570.08/856.20 = 488/x
  3. Step 3: Cross multiply
    570.08x = 856.20 × 488
  4. Step 4: Simplify right side
    570.08x = 417,825.60
  5. Step 5: Solve for x
    x = 417,825.60/570.08
  6. Step 6: Final answer
    x = 732.92

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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.