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Finding the Fourth Proportional to 975.61, 1,346.37 and 533.55

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Solution

The fourth proportional to 975.61, 1,346.37 and 533.55 is: 736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.61 : 1,346.37 = 533.55 : x
  2. Step 2: Convert to fraction form
    975.61/1,346.37 = 533.55/x
  3. Step 3: Cross multiply
    975.61x = 1,346.37 × 533.55
  4. Step 4: Simplify right side
    975.61x = 718,355.71
  5. Step 5: Solve for x
    x = 718,355.71/975.61
  6. Step 6: Final answer
    x = 736.31

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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.