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Finding the Fourth Proportional to 953.04, 1,316.30 and 637.78

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Solution

The fourth proportional to 953.04, 1,316.30 and 637.78 is: 880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.04 : 1,316.30 = 637.78 : x
  2. Step 2: Convert to fraction form
    953.04/1,316.30 = 637.78/x
  3. Step 3: Cross multiply
    953.04x = 1,316.30 × 637.78
  4. Step 4: Simplify right side
    953.04x = 839,509.81
  5. Step 5: Solve for x
    x = 839,509.81/953.04
  6. Step 6: Final answer
    x = 880.88

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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.