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Finding the Fourth Proportional to 156.94, 235.23 and 59.39

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Solution

The fourth proportional to 156.94, 235.23 and 59.39 is: 89.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.94 : 235.23 = 59.39 : x
  2. Step 2: Convert to fraction form
    156.94/235.23 = 59.39/x
  3. Step 3: Cross multiply
    156.94x = 235.23 × 59.39
  4. Step 4: Simplify right side
    156.94x = 13,970.31
  5. Step 5: Solve for x
    x = 13,970.31/156.94
  6. Step 6: Final answer
    x = 89.02

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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.