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Finding the Fourth Proportional to 930.15, 1,283.56 and 510.47

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Solution

The fourth proportional to 930.15, 1,283.56 and 510.47 is: 704.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.15 : 1,283.56 = 510.47 : x
  2. Step 2: Convert to fraction form
    930.15/1,283.56 = 510.47/x
  3. Step 3: Cross multiply
    930.15x = 1,283.56 × 510.47
  4. Step 4: Simplify right side
    930.15x = 655,215.99
  5. Step 5: Solve for x
    x = 655,215.99/930.15
  6. Step 6: Final answer
    x = 704.42

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1.5x scale

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.