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Finding the Fourth Proportional to 672.02, 933.59 and 666.01

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Solution

The fourth proportional to 672.02, 933.59 and 666.01 is: 925.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.02 : 933.59 = 666.01 : x
  2. Step 2: Convert to fraction form
    672.02/933.59 = 666.01/x
  3. Step 3: Cross multiply
    672.02x = 933.59 × 666.01
  4. Step 4: Simplify right side
    672.02x = 621,780.28
  5. Step 5: Solve for x
    x = 621,780.28/672.02
  6. Step 6: Final answer
    x = 925.24

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.