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Finding the Fourth Proportional to 975.74, 1,346.51 and 533.63

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Solution

The fourth proportional to 975.74, 1,346.51 and 533.63 is: 736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.74 : 1,346.51 = 533.63 : x
  2. Step 2: Convert to fraction form
    975.74/1,346.51 = 533.63/x
  3. Step 3: Cross multiply
    975.74x = 1,346.51 × 533.63
  4. Step 4: Simplify right side
    975.74x = 718,538.13
  5. Step 5: Solve for x
    x = 718,538.13/975.74
  6. Step 6: Final answer
    x = 736.40

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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.