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Finding the Fourth Proportional to 897.89, 1,345.61 and 377.46

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Solution

The fourth proportional to 897.89, 1,345.61 and 377.46 is: 565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.89 : 1,345.61 = 377.46 : x
  2. Step 2: Convert to fraction form
    897.89/1,345.61 = 377.46/x
  3. Step 3: Cross multiply
    897.89x = 1,345.61 × 377.46
  4. Step 4: Simplify right side
    897.89x = 507,914.89
  5. Step 5: Solve for x
    x = 507,914.89/897.89
  6. Step 6: Final answer
    x = 565.68

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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.