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Finding the Fourth Proportional to 931.02, 1,395.83 and 468.46

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Solution

The fourth proportional to 931.02, 1,395.83 and 468.46 is: 702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    931.02 : 1,395.83 = 468.46 : x
  2. Step 2: Convert to fraction form
    931.02/1,395.83 = 468.46/x
  3. Step 3: Cross multiply
    931.02x = 1,395.83 × 468.46
  4. Step 4: Simplify right side
    931.02x = 653,889.51
  5. Step 5: Solve for x
    x = 653,889.51/931.02
  6. Step 6: Final answer
    x = 702.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.