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Finding the Fourth Proportional to 570.06, 858.51 and 479.34

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Solution

The fourth proportional to 570.06, 858.51 and 479.34 is: 721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.06 : 858.51 = 479.34 : x
  2. Step 2: Convert to fraction form
    570.06/858.51 = 479.34/x
  3. Step 3: Cross multiply
    570.06x = 858.51 × 479.34
  4. Step 4: Simplify right side
    570.06x = 411,518.18
  5. Step 5: Solve for x
    x = 411,518.18/570.06
  6. Step 6: Final answer
    x = 721.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.