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Finding the Fourth Proportional to 152.23, 210.05 and 93.23

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Solution

The fourth proportional to 152.23, 210.05 and 93.23 is: 128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.23 : 210.05 = 93.23 : x
  2. Step 2: Convert to fraction form
    152.23/210.05 = 93.23/x
  3. Step 3: Cross multiply
    152.23x = 210.05 × 93.23
  4. Step 4: Simplify right side
    152.23x = 19,582.25
  5. Step 5: Solve for x
    x = 19,582.25/152.23
  6. Step 6: Final answer
    x = 128.64

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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.