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Finding the Fourth Proportional to 572.30, 858.51 and 355.70

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Solution

The fourth proportional to 572.30, 858.51 and 355.70 is: 533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.30 : 858.51 = 355.70 : x
  2. Step 2: Convert to fraction form
    572.30/858.51 = 355.70/x
  3. Step 3: Cross multiply
    572.30x = 858.51 × 355.70
  4. Step 4: Simplify right side
    572.30x = 305,372.01
  5. Step 5: Solve for x
    x = 305,372.01/572.30
  6. Step 6: Final answer
    x = 533.59

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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.