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Finding the Fourth Proportional to 155.51, 233.28 and 58.00

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Solution

The fourth proportional to 155.51, 233.28 and 58.00 is: 87.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.51 : 233.28 = 58.00 : x
  2. Step 2: Convert to fraction form
    155.51/233.28 = 58.00/x
  3. Step 3: Cross multiply
    155.51x = 233.28 × 58.00
  4. Step 4: Simplify right side
    155.51x = 13,529.07
  5. Step 5: Solve for x
    x = 13,529.07/155.51
  6. Step 6: Final answer
    x = 87.00

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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.