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Finding the Fourth Proportional to 975.37, 1,345.95 and 533.18

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Solution

The fourth proportional to 975.37, 1,345.95 and 533.18 is: 735.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.37 : 1,345.95 = 533.18 : x
  2. Step 2: Convert to fraction form
    975.37/1,345.95 = 533.18/x
  3. Step 3: Cross multiply
    975.37x = 1,345.95 × 533.18
  4. Step 4: Simplify right side
    975.37x = 717,633.62
  5. Step 5: Solve for x
    x = 717,633.62/975.37
  6. Step 6: Final answer
    x = 735.76

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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.