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Finding the Fourth Proportional to 525.17, 786.72 and 402.83

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Solution

The fourth proportional to 525.17, 786.72 and 402.83 is: 603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.17 : 786.72 = 402.83 : x
  2. Step 2: Convert to fraction form
    525.17/786.72 = 402.83/x
  3. Step 3: Cross multiply
    525.17x = 786.72 × 402.83
  4. Step 4: Simplify right side
    525.17x = 316,916.02
  5. Step 5: Solve for x
    x = 316,916.02/525.17
  6. Step 6: Final answer
    x = 603.46

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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.