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Finding the Fourth Proportional to 315.64, 435.53 and 175.76

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Solution

The fourth proportional to 315.64, 435.53 and 175.76 is: 242.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.64 : 435.53 = 175.76 : x
  2. Step 2: Convert to fraction form
    315.64/435.53 = 175.76/x
  3. Step 3: Cross multiply
    315.64x = 435.53 × 175.76
  4. Step 4: Simplify right side
    315.64x = 76,547.12
  5. Step 5: Solve for x
    x = 76,547.12/315.64
  6. Step 6: Final answer
    x = 242.51

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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.