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Finding the Fourth Proportional to 907.21, 1,252.13 and 534.51

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Solution

The fourth proportional to 907.21, 1,252.13 and 534.51 is: 737.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.21 : 1,252.13 = 534.51 : x
  2. Step 2: Convert to fraction form
    907.21/1,252.13 = 534.51/x
  3. Step 3: Cross multiply
    907.21x = 1,252.13 × 534.51
  4. Step 4: Simplify right side
    907.21x = 669,269.81
  5. Step 5: Solve for x
    x = 669,269.81/907.21
  6. Step 6: Final answer
    x = 737.72

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Double scale
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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.