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Finding the Fourth Proportional to 607.36, 838.36 and 386.32

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Solution

The fourth proportional to 607.36, 838.36 and 386.32 is: 533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.36 : 838.36 = 386.32 : x
  2. Step 2: Convert to fraction form
    607.36/838.36 = 386.32/x
  3. Step 3: Cross multiply
    607.36x = 838.36 × 386.32
  4. Step 4: Simplify right side
    607.36x = 323,875.24
  5. Step 5: Solve for x
    x = 323,875.24/607.36
  6. Step 6: Final answer
    x = 533.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.