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Finding the Fourth Proportional to 270.30, 373.10 and 153.93

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Solution

The fourth proportional to 270.30, 373.10 and 153.93 is: 212.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.30 : 373.10 = 153.93 : x
  2. Step 2: Convert to fraction form
    270.30/373.10 = 153.93/x
  3. Step 3: Cross multiply
    270.30x = 373.10 × 153.93
  4. Step 4: Simplify right side
    270.30x = 57,430.51
  5. Step 5: Solve for x
    x = 57,430.51/270.30
  6. Step 6: Final answer
    x = 212.47

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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.