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Finding the Fourth Proportional to 581.40, 870.48 and 364.32

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Solution

The fourth proportional to 581.40, 870.48 and 364.32 is: 545.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.40 : 870.48 = 364.32 : x
  2. Step 2: Convert to fraction form
    581.40/870.48 = 364.32/x
  3. Step 3: Cross multiply
    581.40x = 870.48 × 364.32
  4. Step 4: Simplify right side
    581.40x = 317,133.27
  5. Step 5: Solve for x
    x = 317,133.27/581.40
  6. Step 6: Final answer
    x = 545.46

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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.