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Finding the Fourth Proportional to 522.33, 720.93 and 345.31

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Solution

The fourth proportional to 522.33, 720.93 and 345.31 is: 476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.33 : 720.93 = 345.31 : x
  2. Step 2: Convert to fraction form
    522.33/720.93 = 345.31/x
  3. Step 3: Cross multiply
    522.33x = 720.93 × 345.31
  4. Step 4: Simplify right side
    522.33x = 248,944.34
  5. Step 5: Solve for x
    x = 248,944.34/522.33
  6. Step 6: Final answer
    x = 476.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.