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Finding the Fourth Proportional to 652.77, 973.94 and 621.81

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Solution

The fourth proportional to 652.77, 973.94 and 621.81 is: 927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.77 : 973.94 = 621.81 : x
  2. Step 2: Convert to fraction form
    652.77/973.94 = 621.81/x
  3. Step 3: Cross multiply
    652.77x = 973.94 × 621.81
  4. Step 4: Simplify right side
    652.77x = 605,602.52
  5. Step 5: Solve for x
    x = 605,602.52/652.77
  6. Step 6: Final answer
    x = 927.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.